公开(公告)号：US08648597B2

公开(公告)日：2014-02-11

申请号：US12702666

申请日：2010-02-09

Applicant: Hideta Habara ,  Yoshitaka Bito ,  Hisaaki Ochi ,  Yoshihisa Soutome ,  Masayoshi Dohata ,  Tetsuhiko Takahashi ,  Hiroyuki Takeuchi

Inventor： Hideta Habara ,  Yoshitaka Bito ,  Hisaaki Ochi ,  Yoshihisa Soutome ,  Masayoshi Dohata ,  Tetsuhiko Takahashi ,  Hiroyuki Takeuchi

IPC: G01R33/34

CPC classification number: G01R33/3456

Abstract: An RF coil is provided with a hollow-shaped outer conductive element and strip-shaped conductive elements disposed along the outer conductive element in the axial direction. The strip-shaped conductive elements are disposed with uneven intervals to secure an internal space at a position where the strip-shaped conductive elements are not disposed. In order to obtain uniform sensitivity at the center section of the RF coil, the strip-shaped conductive elements and the outer conductive element are electrically connected via capacitors of which capacitances are adjusted so that a magnetic field component perpendicular to the center axis should be generated at a desired resonance frequency, and the strip-shaped conductive elements are axisymmetrically disposed with respect to the center axis of the outer conductive element. As a result, a comfortable examination space in a tunnel type MRI apparatus is achieved without increasing the manufacturing cost of the MRI apparatus.

Abstract translation: RF线圈设置有中空形的外导电元件和沿轴向方向沿着外导电元件设置的条形导电元件。 带状导电元件以不均匀的间隔设置，以将内部空间固定在未设置条形导电元件的位置。 为了在RF线圈的中心部分获得均匀的灵敏度，条状导电元件和外部导电元件通过电容被调节的电容器电连接，使得应当产生垂直于中心轴的磁场分量 并且所述带状导电元件相对于外导电元件的中心轴线对称设置。 结果，在不增加MRI装置的制造成本的情况下实现隧道式MRI装置中的舒适的检查空间。

公开(公告)号：US20130119991A1

公开(公告)日：2013-05-16

申请号：US13811979

申请日：2011-07-25

Applicant: Yoshihisa Soutome ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi ,  Hideta Habara

Inventor： Yoshihisa Soutome ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi ,  Hideta Habara

IPC: G01R33/34

CPC classification number: G01R33/34 ,  A61B5/055 ,  G01R33/34046 ,  G01R33/34084 ,  G01R33/3453 ,  G01R33/365 ,  G01R33/3657 ,  G01R33/3678 ,  G01R33/422

Abstract: A technique is provided to reserve large examination space in the tunnel type MRI apparatus, without increasing production cost nor reducing significantly irradiation efficiency and homogeneity in an irradiation distribution within an imaging region. The present invention provides an RF coil unit in which four partial cylindrical coils are placed with a gap therebetween in the circumferential direction inside a cylindrical RF shield, in such a manner that two pairs of the partial cylindrical coils are opposed to each other, and magnetic fields produced by the individual partial cylindrical coils are combined, thereby producing a circularly polarized wave field or an elliptically polarized wave field. The partial cylindrical coil is provided with a partial cylindrical conductor, multiple first conductors substantially parallel with the central axis of the RF shield, multiple capacitors connecting both ends of the first conductors with the partial cylindrical conductor, and a second conductor adjacent to at least one of the ends of the first conductor. The partial cylindrical coils are respectively provided with high frequency signals having a desired amplitude ratio and phase difference, while a reference frequency thereof being identical.

Abstract translation: 提供了一种在隧道式MRI装置中预留大的检查空间的技术，而不增加成本区域内的照射分布的生产成本，降低照射效率和均匀性。 本发明提供了一种RF线圈单元，其中四个部分圆柱形线圈在圆柱形RF屏蔽内沿圆周方向放置有间隙，使得两对部分圆柱形线圈彼此相对，并且磁性 由各个部分圆柱形线圈产生的磁场组合，从而产生圆偏振波场或椭圆偏振波场。 部分圆柱形线圈设置有部分圆柱形导体，多个第一导体基本上平行于RF屏蔽的中心轴线，多个电容器连接第一导体的两端与部分圆柱形导体，第二导​​体与至少一个 的第一导体的端部。 部分圆柱形线圈分别设置有具有期望的振幅比和相位差的高频信号，而其参考频率相同。

公开(公告)号：US08384380B2

公开(公告)日：2013-02-26

申请号：US12663939

申请日：2008-06-25

Applicant: Takayuki Abe ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi

Inventor： Takayuki Abe ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi

IPC: G01V3/00

CPC classification number: A61B5/055 ,  G01R33/4828 ,  G01R33/4835 ,  G01R33/5607

Abstract: In order to stably obtain an even fat-suppressed image without reduction of an imaging efficiency and without being affected by unevenness of irradiation magnetic field of an RF pulse, when an imaging sequence having a first sequence part for suppressing a signal from a desired component of an examinee by applying a CHESS pulse and a second sequence part for measuring an echo signal from the examinee is repeated, the flip angle of the CHESS pulse is changed at plural times. In the case of multi-slice imaging, the flip angle of the CHESS pulse is changed in at lest two slice imaging.

Abstract translation: 为了稳定地获得均匀的脂肪抑制图像而不降低成像效率并且不受RF脉冲的照射磁场的不均匀性的影响，当具有用于抑制来自所需成分的信号的第一序列部分的成像序列 重复通过应用CHESS脉冲的受检者和用于测量来自受检者的回波信号的第二序列部分，CHESS脉冲的翻转角多次改变。 在多切片成像的情况下，CHESS脉冲的翻转角仅在两个切片成像中进行改变。

公开(公告)号：US20120262173A1

公开(公告)日：2012-10-18

申请号：US13512090

申请日：2010-11-29

Applicant: Yoshihisa Soutome ,  Hideta Habara ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi

Inventor： Yoshihisa Soutome ,  Hideta Habara ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi

IPC: G01R33/34 ,  G01R33/48

CPC classification number: G01R33/34046 ,  G01R33/34053 ,  G01R33/34076 ,  G01R33/3453 ,  G01R33/3657 ,  G01R33/3678

Abstract: There is provided a technique for securing a large examination space in a tunnel type MRI device without inviting increase of manufacturing cost and without significantly reducing irradiation efficiency or uniformity of the irradiation intensity distribution in an imaging region. Between rungs of a partially cylindrical RF coil, which coil corresponds to a cylindrical RF coil of which part is removed, there are disposed half-loops generating magnetic fields, which are synthesized with magnetic fields generated by loops constituted by adjacent rungs of the partially cylindrical RF coil and rings connecting the rungs to generate a circularly polarized or elliptically polarized magnetic field. Further, high-frequency signals of the same reference frequency having a desired amplitude ratio and phase difference are supplied to the partially cylindrical RF coils and half-loops.

Abstract translation: 提供了一种用于在隧道式MRI装置中确保大的检查空间的技术，而不会增加制造成本，并且不显着降低成像区域中的照射强度分布的照射效率或均匀性。 在部分圆柱形RF线圈的两个梯级之间，该线圈对应于部分被去除的圆柱形RF线圈，设置有产生磁场的半环，该磁场由具有由部分圆柱形的相邻梯级构成的环产生的磁场合成 RF线圈和环连接梯级以产生圆偏振或椭圆偏振磁场。 此外，具有期望幅度比和相位差的相同参考频率的高频信号被提供给部分圆柱形RF线圈和半环。

公开(公告)号：US20110159982A1

公开(公告)日：2011-06-30

申请号：US12973312

申请日：2010-12-20

Applicant: Hiroyuki TAKEUCHI

Inventor： Hiroyuki TAKEUCHI

IPC: A63B53/16

CPC classification number: A63B60/22 ,  A63B53/14 ,  A63B2060/0085 ,  A63B2210/50

Abstract: A golf club 2 is provided with a head 4, a shaft 6, a grip body 8a, and an extending member 8b. The extending member 8b is detachably mounted to a back end of the grip body 8a. A length of a grip holding surface 8m can be adjusted by mounting and dismounting the extending member 8b. Preferably, the grip body 8a has a hard base body h1. Preferably, the extending member 8b has a hard connector h2. Preferably, the extending member 8b can be mounted to the back end of the grip body 8a by connecting the hard base body h1 and the hard connector h2 to each other. The number of the extending member 8b may be 1 or equal to or greater than 2. Preferably, the extending members are detachably mounted to each other.

Abstract translation: 高尔夫球杆2设置有头部4，轴6，手柄本体8a和延伸部件8b。 延伸构件8b可拆卸地安装在把手本体8a的后端。 可以通过安装和拆卸延伸件8b来调节夹持保持表面8m的长度。 优选地，把持体8a具有硬质基体h1。 优选地，延伸构件8b具有硬连接器h2。 优选地，延伸构件8b可以通过将硬质基体h1和硬连接器h2彼此连接而安装到把手本体8a的后端。 延伸构件8b的数量可以为1或等于或大于2.优选地，延伸构件可拆卸地彼此安装。

公开(公告)号：US20090069111A1

公开(公告)日：2009-03-12

申请号：US12222570

申请日：2008-08-12

Applicant: Hiroyuki Takeuchi

Inventor： Hiroyuki Takeuchi

IPC: A63B53/02

CPC classification number: A63B53/00 ,  A63B60/00 ,  A63B60/54 ,  A63B2209/00

Abstract: A golf club (2) includes a head (4), a shaft (6) and a grip (8). An elastic member (10) is attached to an external surface of the shaft (6). The elastic member (10) is ring-shaped and has no end. The elastic member (10) is externally fitted in the shaft (6) in a state in which an elastic contracting force is maintained. It is preferable that a fastening member for fastening the elastic member (10) from an outside should be provided. The fastening member is constituted to enable a mutual transition of a fastening state in which the elastic member is fastened and a removing state in which the fastening member is removed from the elastic member and is also removed from the golf club. It is preferable that the fastening member should be provided in no contact with the shaft (6) in the fastening state.

Abstract translation: 高尔夫球杆（2）包括头部（4），轴（6）和把手（8）。 弹性构件（10）附接到轴（6）的外表面。 弹性部件（10）是环状的，没有结束。 在保持弹性收缩力的状态下，弹性部件（10）以外部装配在轴（6）中。 应该提供用于从外部紧固弹性部件（10）的紧固部件。 紧固构件被构造成使得能够相互转移紧固状态，其中弹性构件被紧固，并且紧固构件从弹性构件移除并且也从高尔夫球杆移除的移除状态。 优选的是，在紧固状态下，紧固构件不应与轴（6）接触。

公开(公告)号：US07304478B2

公开(公告)日：2007-12-04

申请号：US10528759

申请日：2003-09-12

Applicant: Munetaka Tsuda ,  Hiroyuki Takeuchi ,  Isao Sakamoto

Inventor： Munetaka Tsuda ,  Hiroyuki Takeuchi ,  Isao Sakamoto

IPC: G01V3/00

CPC classification number: G01R33/3815

Abstract: A MRI apparatus includes a super-conducting magnet including a superconducting coil circuit having a super-conducting coil and a permanent current switch for controlling permanent current flowing through the super-conducting coil; at least one electrical circuit which is electrically connected to at least one electrical element and disposed at the outside of the super-conducting magnet; a gradient magnetic filed generating means; a high frequency magnetic field generating means; and shielded examination room which accommodates the super-conducting magnet. The apparatus further comprises means for interrupting noise current generated based on tomographic image measurement of the subject. Said means is disposed outside the super-conducting magnet and inside the shielded examination room while being inserted between the electrical circuit and the super-conducting magnet.

Abstract translation: MRI装置包括超导磁体，其包括具有超导线圈的超导线圈电路和用于控制流过超导线圈的永久电流的永久电流开关; 至少一个电路，其电连接到至少一个电气元件并且设置在所述超导磁体的外部; 梯度磁场产生装置; 高频磁场产生装置; 以及容纳超导磁体的屏蔽检查室。 该装置还包括用于中断基于对象的断层图像测量产生的噪声电流的装置。 所述装置设置在超导电磁体外部并且在屏蔽检查室内部插入电路和超导磁体之间。

公开(公告)号：US07141970B2

公开(公告)日：2006-11-28

申请号：US10518122

申请日：2003-07-03

Applicant: Shouichi Miyawaki ,  Hiroyuki Takeuchi ,  Hideki Kumai

Inventor： Shouichi Miyawaki ,  Hiroyuki Takeuchi ,  Hideki Kumai

IPC: G01V3/00

CPC classification number: G01R33/56518

Abstract: An MRI apparatus having a calibration pulse sequence, wherein a group of pulse sequences for applying test gradient magnetic fields are established from a basic pulse sequence by a gradient echo method of short TR, a group of pulse sequences not applying test gradient fields are established from the basic pulse sequence, a set of three- or four-dimensional data including a time variable is created by using echo signals collected by at least one of the groups, two data sets are created as a whole by inverting the polarity of the test gradient magnetic field, the difference between phase images thereof is determined, the magnitude and time constant of eddy current induced at the fall or rise of the gradient magnetic field are determined from the phase difference image, and the variation of the magnetic field due to eddy current induced at the rise and/or fall of the gradient magnetic field can be measured in a relatively short time with a desired time resolution even if the magnetic field variation is of a very long time constant.

Abstract translation: 具有校准脉冲序列的MRI装置，其中通过短TR的梯度回波方法从基本脉冲序列建立用于施加测试梯度磁场的一组脉冲序列，建立不应用测试梯度场的一组脉冲序列 通过使用由至少一个组收集的回波信号来创建包括时间变量的三维或四维数据的基本脉冲序列的集合，通过反转测试梯度的极性来整体地创建两个数据集 磁场，确定其相位图像之间的差异，从相位差图像确定在倾斜磁场的下降或上升期间感应的涡流的大小和时间常数，以及由于涡流引起的磁场的变化 在梯度磁场的上升和/或下降时可以在相对短的时间内以期望的时间分辨率测量，即使磁场 d变化是非常长的时间常数。

公开(公告)号：US06999006B2

公开(公告)日：2006-02-14

申请号：US10988515

申请日：2004-11-16

Applicant: Hiroyuki Takeuchi ,  Takuya Harada

Inventor： Hiroyuki Takeuchi ,  Takuya Harada

IPC: H03M1/22

CPC classification number: G01D5/2457

Abstract: A rotation position detecting device includes an angular signal generator which generates pulses the cycle period of which is even or equal when a rotating object rotates at a constant rotation speed and a non-pulse portion which corresponds to a reference position, an up-down command circuit for generating an up-down command signal the frequency of which is divided to a half of the frequency of the angular signal, a pair of first counters for counting up or down the clock signal when the up-down command signal changes from a first level to a second level to reset and subsequently counting down the clock signal when the up-down command signal changes from the second level to the first level, a pair of processing circuits for providing a first and second reference values, a pair of counters which generates detection signals when the counted number of the counters becomes smaller than the first or the second reference value.

Abstract translation: 旋转位置检测装置包括角度信号发生器，其产生当旋转物体以恒定旋转速度旋转的循环周期均匀或相等的脉冲和对应于基准位置的非脉冲部分的脉冲，上下指令 电路，用于产生其频率被分频为角度信号的频率的一半的上下指令信号;一对第一计数器，用于当上下命令信号从第一 当上升命令信号从第二电平变为第一电平时，复位并随后对时钟信号进行递减，一对用于提供第一和第二参考值的处理电路，一对计数器 当计数的计数数量小于第一或第二参考值时，产生检测信号。

公开(公告)号：US20050248350A1

公开(公告)日：2005-11-10

申请号：US10528759

申请日：2003-09-12

Applicant: Munetaka Tsuda ,  Hiroyuki Takeuchi ,  Isao Sakamoto

Inventor： Munetaka Tsuda ,  Hiroyuki Takeuchi ,  Isao Sakamoto

IPC: A61B5/055 ,  G01R33/3815 ,  H01F7/20 ,  G01V3/00

CPC classification number: G01R33/3815

Abstract: In order to provide a high intensity magnetic field open type MRI apparatus which suppresses electro-magnetic interference to super-conducting coils due to gradient magnetic field coils and high frequency magnetic field coils and to realize stable operation of super-conducting magnet, in a static magnetic field generating magnet 102, a pair of cryostats 117 are connected by a coupling tube 201 and disposed in vertical direction while sandwiching a space 118 where a subject is laid, and in vessels 202 and 203 filled with liquid helium in the respective cryostats super-conducting coils are accommodated. To the cryostats 117 an emergency demagnetizing unit 120 for attenuating magnetic field and a measurement unit 121 for monitoring helium liquid level belong, and signal cables therefor are connected to an inner circuit of the static magnetic field generating magnet 102 via a filter circuit 122. High frequency current induced when the gradient magnetic field coils and the high frequency magnetic field coils are driven is interrupted by the filter circuit 122 and is caused to flow to a connection point 123 via the outer casing of the cryostats 117, thereby, no influences are effected to the inner circuit in the cryostats 117.

Abstract translation: 为了提供一种高强度磁场开放型MRI装置，其抑制由于梯度磁场线圈和高频磁场线圈引起的对超导线圈的电磁干扰，并且实现超导磁体的稳定运行，在静态 磁场产生磁体102，一对低温恒温器117通过耦合管201连接并且在垂直方向上设置，同时夹着放置受试者的空间118，以及在各个低温恒温器中填充液氦的容器202和203中， 容纳导线。 对于低温恒温器117，用于衰减磁场的紧急退磁单元120和用于监测氦液位的测量单元121属于，并且其信号电缆经由滤波器电路122连接到静磁场产生磁体102的内部电路。高 当驱动梯度磁场线圈和高频磁场线圈时感应的频率电流被滤波器电路122中断，并且经由低温恒温器117的外壳流到连接点123，从而不影响其影响 到低温恒温器117中的内部电路。